disk controller


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disk controller

(hardware, storage)
(Or "hard disk controller", HDC) The circuit which allows the CPU to communicate with a hard disk, floppy disk or other kind of disk drive.

The most common disk controllers in use are IDE and SCSI controllers. Most home personal computers use IDE controllers. High end PCs, workstations and network file servers mostly have SCSI adaptors.

disk controller

The circuits that control data transfer to and from the disk drive (floppy disk, hard disk, optical disc). In a PC, an IDE disk controller is typically built into the motherboard, and a cable plugs into the controller socket on one end and connects to the drive on the other. On earlier PCs, the disk controller was a separate card plugged into a PCI or ISA slot. However, when SCSI drives are used, a SCSI disk controller (SCSI host adapter) is typically not built in, but available on a separate card. See hard disk, IDE and SCSI.
References in periodicals archive ?
Without a moment's reflection, he said, "I suspect your floppy disk controller card is incompatible with your new hard drive controller board; otherwise the computer would have booted up."
This is the cleanest solution since it is part of the disk controller solution since it is part of the disk controller hardware and does not impact the operating system or other software.
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The chip replaces two 15C450 universally asynchronous receiver transmitters (UARTs), a 765A standard floppy disk controller, a power management unit, a crystal oscillator, and high-powered drive packages for running slots and drive inputs.
Agere's TrueStore consumer electronics (CE) chip set includes read-channel, preamplifier, motor controller and hard disk controller solutions - the essential silicon required for developing high-performance miniature disk drive form factors from 1.8 inches down to 0.85 inches.
One of the enabling technologies significant to the disk drive industry was the integrated disk controller, which brought disk drives to desktop systems in the early '80s.
SST (NASDAQ:SSTI) recently announced a new stand-alone, high-performance ATA Flash Disk Controller that boasts a sustained write speed of up to 4 MBytes/sec., thereby allowing for faster and more user-friendly mass data storage products.
Under current releases of HP- UX, for instance, if an I/O device like a disk controller fails, it takes down the whole system.
The MAID concept uses the long-standing storage industry observation that approximately "80% of the activity goes to 20% of the physical storage." By reducing the number of disks that are concurrently active, the disk controller costs can be significantl y lowered by significantly reducing the number of I/O path connections, cache requirements, and overall controller complexity.
SST brings mass-storage capability to a whole new series of applications by offering its flash-based ATA Flash Disk Controller as a stand-alone product.
The lawsuit alleged that under certain circumstances, the floppy disk controller (FDC) in the PCs caused data to be lost or corrupted as it was written to a floppy disk.
The base B50 comes with 128Mb of main memory, expandable to 1Gb, and an integrated UltraSCSI-2 disk controller, a 1.44Mb floppy disk drive and a 32X CD-ROM drive.